Fix throttling only cleaning up old entries every 2 minutes.

That is, until the first REHASH happened, after that all is good.

This was caused by update_throttling_timer_settings() being
called before init_throttling().

src/api-event.c

@@ -224,4 +224,5 @@ void SetupEvents(void)
 	EventAdd(NULL, "handshake_timeout", handshake_timeout, NULL, 1000, 0);
 	EventAdd(NULL, "tls_check_expiry", tls_check_expiry, NULL, (86400/2)*1000, 0);
 	EventAdd(NULL, "unrealdb_expire_secret_cache", unrealdb_expire_secret_cache, NULL, 61000, 0);
+	EventAdd(NULL, "throttling_check_expire", throttling_check_expire, NULL, 1000, 0);
 }

src/hash.c

@@ -617,14 +617,6 @@ void update_throttling_timer_settings(void)
 	EventMod(EventFind("throttling_check_expire"), &eInfo);
 }
 
-void init_throttling()
-{
-	EventAdd(NULL, "throttling_check_expire", throttling_check_expire, NULL, 123456, 0);
-	/* Note: the every_ms value (123,456) will be adjusted on boot and rehash
-	 * via the update_throttling_timer_settings() function.
-	 */
-}
-
 uint64_t hash_throttling(const char *ip)
 {
 	return siphash(ip, siphashkey_throttling) % THROTTLING_HASH_TABLE_SIZE;

src/ircd.c

@@ -1152,7 +1152,6 @@ int InitUnrealIRCd(int argc, char *argv[])
 
 	fix_timers();
 	write_pidfile();
-	init_throttling();
 	loop.booted = 1;
 #if defined(HAVE_SETPROCTITLE)
 	setproctitle("%s", me.name);